DE7331796U - DISPLAYING TEMPERATURE MEASURING AND CONTROL DEVICE FOR OVEN - Google Patents

Description

. , Il · I I I I I f I I t

». · Til · ι, '

PATENTAN w: «: Lrr'e ''/>'' 6 KOLN 61

MAXTON ea MAXTON jr. PFERDMENaESSTR.eo

DIPLOMAIN ENGINEERS - _ft

30 AUG. 1973

Applicant: Company Josef Mauermann, Ofenbau, 5 Köln 60 Designation: Indicating temperature measuring and control device

for ovens Our reference: 69 g 732

The invention relates to a temperature measuring and indicating -Control device for ovens with an actual value display and at least one adjustable setpoint display.

Ser-like heating and control devices are used in the bakery community in particular to stabilize the temperature of baking ovens and at the same time to indicate during heating, cooling and during Change the specified temperature to be able to read off the value actually reached and to see the actual temperature in the oven during operation, especially in the To be able to monitor comparison to the set target value.

Indicating temperature measuring and control devices for are known Ovens with an actual value display and at least one adjustable setpoint display and a fixed display scale, which are slender, pointed or knife-shaped at their ends formed pointers for the actual value display and

Telephone: (O221) 38OS38 · Telegram: Inventator Cologne · Place of fulfillment and Qeriohteetand for both parts let Cologne Oeutecfte Bank Αθ * «η (BLZ 87Ο φ ^ £" 1 ^ S ffiftf ^t tlyP ^BI1 " ^{okkonto Cologne} < ^{θι Z 8r01O} ° ^βο » * 9θΑ «Λ 1β2Ββ1

• · »ti

Similar pointers or triangular marks for the setpoint display provide · ^! be turned. These devices are, in particular under the aspect ¹ point a high reading accuracy is formed, to which the pointer,

1 N «r« sn and. SkalSiigravierunssn vorehrp.lic ^ as thin «* black

j lines are held on a white background. This execution

These genes have the particular disadvantage that they can only be read properly at close range and only with appropriate care j are while a fast, superficial or long distance the reading carried out is difficult and uncertain. ;

The object of the invention is 9S, an indicating temperature measuring device
j and control device for 'ovens to create, ι

} This enables quick reading and a comparison of the actual and target values, even when there is a larger discharge, which enables a simple check of the measured and set values in comparison with the main operating values.

ι This object is achieved according to the invention in that the 'actual value display is carried out by a relative to the display scale movable • disc, the display mark through the dividing line i i of two areas with high color and / or light-dark contrast _; is given, and that the target value is displayed by a wide pointer with a high color and / or light-dark contrast against the background, the disk and the pointer are arranged so that the dividing line at the same

Setpoint and actual value run in the direction of the pointer. !

The solution according to the invention initially allows even in dusty

or smoke-filled rooms and fast recording of the actual temperature even from a great distance. The position of the dividing line of the surfaces on the pane, highlighted by the contrast, is clearly and quickly perceptible. The surfaces can be set apart from one another by complementary colors or by particularly bright colors such as red versus yellow. There is also the option of making one area particularly bright and the other dark. If a light source is arranged behind the pane, one area can be made translucent and the other opaque. If a pointer that is wider than the known pointer orms is now arranged in front of this disc, the ^: ■ set target value can still be easily read off and a quick

- Carry out a comparison of the actual and target value. These advantages

* emerge especially when there are several measuring and control devices of this type are grouped together and must be read or monitored.

In a preferred embodiment, the movable disc the actual value display can be arranged behind a scale surface which has a wide slot through which the disc is visible is. This training promotes on the one hand the possibility of a quick reading in that it is no longer just the dividing line the surfaces of the disk can be used for reading, but the volume continues to be the size of the visible Areas of a quickly comprehensible display is used. Furthermore

* Farther

733179629.1173

Ill I I I f

■■■■■■■■ ■■: 4: ■■ ·· 9

the scale surface expediently offers a uniform; Background for the pointer of the setpoint display, its shape and color can stand out more easily against the background.

It can preferably be provided that the pointer extends to the edge of the slot so that it can be clearly seen is whether the dividing line of the disc lies in the direction of the pointer or the center of the pointer or whether there is a discrepancy between the actual and Setpoint exists.

A display scale can expediently be arranged on the edge at least on one side of the slot. In this arrangement, the optically abutting the edge of the slot; Dividing line can be assigned very precisely to the scale, provided that the _; Reasonable scale on the hinge superior to the pointer edge of the slot '

is arranged, it can be used at the same time for setting and reading j j of the setpoint.

In addition, one or more marks can be arranged on the edge at least on one side of the slot have a large width and / or height compared to conventional scale markings and which have a high color and / or Have a light-dark contrast to the background. Such Markings are often necessary or useful in order to

de, limits of the operating area, danger thresholds or other important values. With such brands in particular, it is advantageous if they (also) work well from a great distance

733179629.11.73

• f

I t

are readable.

In particular, it can be provided that a mark is arranged on the edge of the slot which extends over the scale range j for temperatures from 230 ° to 250 ° and which contains a fine mark at the point on the scale for the temperature of 240 °. The entire width of the mark represents the main operating state for the most important applications of the baking ovens, with the fine mark setting ^{a target value at 240 u} that can be set without having to estimate the center of the mark. The fine mark can be represented by any triangle, arrow or other character with a corresponding directional character, preferably it is designed as a narrow line, which can be designed, for example, in the form of a narrow interruption of the mark.

In a preferred embodiment, the disk and the pointer can be rotated about a common axis in two planes behind or in front of a scale surface, and the slot is fixedly arranged around the axis in the form of a wide circular arc. The rotatable assembly is the needs of the construction of the meter movements of such a measuring and control unit answers and allows the connection of a plurality of available on the market meter movements, at the same time results in a simple and easy-to-use, for example on a knurled axis pointer guide. Appropriately, the circular arc piece can correspond to the full measuring mechanism deflection and according to a

733179629.11.73

I 1

standardized design extend over an angle of 270 °. ^!

For an exact reading of the target setting, the pointer can have a; Line preferably running in the middle of the pointer for fine reading have .. Such a line added for fine reading

I advantageously have the option of reading and inputting ·

Position of the device in which it guarantees an exact representation of the set value, but in particular a allows for a correspondingly precise setting. ;

An embodiment of the invention is shown in the drawing in schematic form and is described in more detail below.

The measuring and control device is essentially square.

t display area 3 in which approximately in the middle an outside;

rändelte axis 4 for a pointer 5 for displaying and settings \ £ - * lung 'of the set value is arranged. The end of the pointer can \

be moved along a circle whose projection onto the display area * 3 with an inner edge 6 of a slot 7 in! ^; The shape of an arc of a circle that falls over an arc of a circle.

extends from about 270 ° around the axis 4. The slot 7 has , an approximately constant width and is limited at its ends by edges extending radially to the axis.

j I

! Two partial surfaces 8 and 9 can be seen through the slot 7, j

! ·

which collide at a dividing line 10. The dividing line 10. ι runs radially to the axis 4. The partial surfaces 8 and 9 are ^:

733179629.ii.73

on a substantially circular disk behind the display _{surface 3 t} which is rotated by a Tempexatürmeßwe rk, where the axis of the temperature measuring mechanism and the disk with the axis 4 of the pointer 5 coincides.

The dividing line 10 shows opposite one on the inner edge 6 of the Slot 7 arranged scale 11 shows the actual value of the temperature. On the same scale, the one set with the aid of the pointer 5 can be used Setpoint can be read off. Due to a yellow! Coloring for the partial area, which is not shown in the drawing

9 and red coloring for the part 11 is the dividing line

10 quickly and widely recognizable and thus the deviation of the actual value from the setpoint value can be easily read off. Farther the scale 11 has digits, not shown, which also allow an accurate display. To the exact When the pointer 5 is set, it has a thin center line 12.

The electric control of the heating of the associated oven can according to a linear function in dependence on the difference of 'actual and desired values take place, said electronic control elements may be recognized, however, a two-point control with the aid of a switching element is _t is preferably provided, which at Correspondence between actual and setpoint switches.

According to the illustration, the pointer 5 is at a broad mark 13 aligned covering the temperature range from 230 ° to 250 ° above deletes. This brand is not represented in the Mixte

Asked, radially extending line divided, which determines the preferred operating state of 240 °. The pointer 5 is in red, the display area 3 is white and the mark 13 is black, so that the display parts can be easily identified and recognized *

The embodiment described above, created under the designation "speaking thermostat", is not a matter of

lent the readability of set and measured values particularly advantageous, it is also designed to be particularly appealing in terms of color and shape.

Protection claims

733179629.11.73

Claims (7)

'• ■ Ill »/ / Protection claims | fiJ Display temperature measuring and control device for Ovens with an actual value display and at least one j adjustable setpoint display as well as a fixed display , Scale, characterized in that the actual value display by a relative to the display scale (11) movable ; Disk er * Igt, the display by the dividing line (10) two surfaces (S, 9) with high color and or = or light-dark contrast is given, and that the target value display by a wide pointer (5) with high color and / or light-dark contrast against the background (3), the disk and the pointer (5) being arranged so that the dividing line (10) if the setpoint and actual value match, in direction of the pointer (5) runs. 2. Temperature measuring and control device according to claim 1, characterized characterized in that the movable disk of the actual value display is arranged behind a scale surface (3) which has a slot (7) through which the disc is visible. 3. Temperature measuring and control device according to claim 2, characterized g e k e nnz e i c h η e t that the pointer (5) is up to the Edge (6) of the slot (7) extends. \ 4. Temperature measuring and control device according to claim 2 or 3 »da- I characterized in that at least on one side of the slot (7) on the edge (6) a display scale (11)! 733179629.11.73 is arranged. 5. Temperature measuring and control device according to claim 2, 3 or 4, characterized in that at least one Side of the slot (7) on the edge (6) one or more marks (13) are arranged, which one compared to conventional Scale markings, large width and / or height and which have a high color and / or light-dark contrast own the substrate (3). 6. temperature measurement and control £ erät according to claim 5, characterized marked as £ a mark (13) on the edge (6) of the slot (7) is arranged, which extends over the scale range for temperatures from 230 ° to 250 ° and the contains a fine mark at the point on the scale for the temperature of 240. 7. Temperature measuring and control device according to one of claims 2 to 6, characterized in that the disc and the pointer (5) * two levels behind or in front of a scale surface (3) VCt a straight axis (4) rotatable and that the slot (7) is fixedly arranged in the form of a wide circular arc piece around the axis (4). 6. TemperaQjtr measuring and control device according to one of the preceding Claims, characterized in that the pointer (5) a line (12) preferably running in the middle of the pointer · Dd - 11 - for fine reading. 733179629.ti.7S